CN102757813A - Crude oil processing unit containing electro-desalted sewage oil remover and method of crude oil processing unit - Google Patents
Crude oil processing unit containing electro-desalted sewage oil remover and method of crude oil processing unit Download PDFInfo
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Abstract
The invention relates to a crude oil processing unit containing an electro-desalted sewage oil remover, and a method of the crude oil processing unit. The crude oil processing unit includes an electrical desalter and a primary tower, wherein the electrical desalter is provided with a crude oil inlet, an oil outlet and a water drain outlet; the primary tower is provided with an oil phase inlet; and the oil outlet of the electrical desalter is communicated with the oil phase inlet of the primary tower. The crude oil processing unit is characterized in that the electrical desalter is further connected with the primary tower through a centrifugal separation unit so as to separate water and oil in electro-desalted sewage; and the centrifugal separation unit includes an inlet, an oil phase outlet and a water phase outlet, wherein the inlet of the centrifugal separation unit is connected with the water drain outlet of the electrical desalter, and the oil phase outlet of the centrifugal separation unit is communicated with the oil phase inlet of the primary tower. The crude oil processing unit and the method thereof overcome the defects that the present electro-desalted sewage oil removing method and equipment are complicated to operate, have poor effects, good separation effect and high separation speed, are convenient to operate and suitable for long-period operation, realize on-site oil removal of the electro-desalted sewage and recycle of the dirty oil, and have high applicability and high impact resistance.
Description
Technical field
The invention belongs to the Petroleum Processing Technology field, relate to a kind of novel method and device of Electric Desalting Wastewater oil removing, specifically, the present invention relates to utilize the method for centrifugal separation equipment the Electric Desalting Wastewater oil removing.The invention still further relates to the used device of this method.
Background technology
Crude oil contains salt and impurity all has adverse influence to the quiet run of the process for processing of crude oil and equipment and maintenance etc., and therefore refining must be carried out desalination earlier.In recent years, but recover petroleum develop towards heaviness and poor qualityization direction, the steady running of electric desalting apparatus has been formed disadvantageous effect, make Electric Desalting Wastewater be difficult to reach corresponding oleaginousness index.Electric Desalting Wastewater has become one of main source of oil refining enterprise sewage, sump oil.
Sewage with oil exceeds standard has not only increased heavy sump oil amount of refinery and sewage sump oil intractability greatly, and environment such as atmosphere and water body and human health are had very big harm.The volatile entering atmosphere of low boiling component in the oil trap sump oil, polluted air, toxicity symptom can take place in the various petroleum distillates of human directly picked-up, influences HUMAN HEALTH.In addition, oily(waste)water gets into waters or underground, influences the tap water resource, and the harm aquatic resources influence crop growth and destroy natural landscape, and corresponding environmental issue highlights day by day.Therefore, sewage degrease is of great practical significance.
At present; Domestic oil refining enterprises still generally uses " old three covers " technology to carry out WWT; I.e. " sedimentation, oil removal-flotation-biochemistry "; Sewage with other devices after the Electric Desalting Wastewater entering oil trap adopts this technical finesse, and isolated sump oil directly gets into slop oil tank, and entering coker or injection feed line are carried out freshening after processed.As shown in Figure 1, be the Electric Desalting Wastewater treating part process flow sheet of prior art.As shown in Figure 1, comprise electrical desalter 2, with the oil trap 7 that electrical desalter 2 water port are connected, electrical desalter 2 is connected with oil trap 7 through interchanger 6, air cooler 4, water cooler 5 successively.Get into electrical desalter 2 after crude oil heats up through preheater 3 before taking off and (comprise one-level electrical desalter 2-
1, secondary electrical desalter 2-
2With three grades of electrical desalter 2-
3) carry out electric desalting, form and take off back crude oil and de-salted water; Take off back crude oil by three grades of electrical desalter 2-
3The oil export on top enters primary tower 1, and de-salted water is discharged from the water port of electrical desalter 2 bottoms; The de-salted water that electrical desalter is discharged is cooled to 50～100 ℃ through interchanger 6, air cooler 4, water cooler 5, drains into oil trap 7.
But, because this kind slop oil tank just leans on gravity settling to dirty oil dewatering, costs and poor dehydration results, the sump oil water cut after the dehydration is high, and coker can only be handled a part, carries out freshening if inject feed line, can cause that electric desalting apparatus worsens, and forms more sump oil.Along with heavy, crude oil with poor quality are mixed the refining ratio and are improved constantly, the aggravation of oily(waste)water emulsification degree, electric desalting apparatus draining oleaginousness is increasingly high, and a lot of enterprises are difficult to qualified discharge, form up to ten thousand tons sump oil, the tank field are stored pose a big pressure.These devices can not satisfy the cleaner production demand.
In order to solve the band oil difficult problem of electric desalting externally discharged waste water, investigators have carried out a large amount of fruitful work.Luoyang Petrochemical adopts oil removal and the preparatory oil removing facility of coarse bonded sewage; Can remove the most of oil slick in the Electric Desalting Wastewater; Sump oil re-injection to the electric desalting apparatus that reclaims enters the mouth, and realizes benign cycle, reaches significant enhancing efficiency by relying on tapping internal latent power purpose; But, the sump oil of separating moisture higher (greater than 10%).Chang Ling branch office cooperates with China Petroleum Univ. (East-China); Use the liquid-liquid rotational flow separation technology to cut the oil concentration of water at electric desalting apparatus to reduce electric desalting apparatus; But greatest problem that should technology is: moisture up to 80-90% in the sump oil of separating; In addition, (oil-containing is greater than 5%) is difficult to guarantee separating effect when the water inlet oleaginousness is higher.
Therefore, oil refining enterprise press for develop can be up hill and dale, effectively and the Electric Desalting Wastewater treatment technology of suitable long-term operation.
Summary of the invention
The present invention utilizes centrifugal separation equipment that Electric Desalting Wastewater is carried out oily water separation, and the oil phase of recovery gets into primary tower, makes the sump oil decrement, has alleviated the pressure of sewage work, has solved the problem that prior art exists.
Technical thought of the present invention is: in existing technology, the sewage that electric desalting produces directly drains into oil trap, handles through " sedimentation, oil removal-flotation-biochemistry " with the sewage of other devices, and isolated sump oil directly gets into slop oil tank.Few part sump oil gets into coker or injects feed line and carry out freshening after processed, on the one hand because the sump oil complicated component contains impurity such as catalyzer, emulsion splitter; Freshening causes the oil refining apparatus operation unstable, more is prone to produce sump oil, is absorbed in vicious cycle; On the other hand; The coker demand is limited, can only utilize few part sump oil, and it is big that the storage pressure of slop oil tank becomes.Along with but recover petroleum heavy, poor qualityization are serious gradually, this technology can not satisfy the production demand.Centrifugal separation technique is the new separation technology that grows up this year, and its cf-can reach the hundred times of gravity usually, and separating power is strong, running is steady, cost is low, floor space is little, is particularly suitable for the system that difference in specific gravity is less or viscosity is big.The present invention adopts centrifugal separation technique that Electric Desalting Wastewater is carried out oily water separation, and isolated sump oil is similar with oil property, and gets into primary tower after the crude oil Hybrid Heating after the electric desalting, purifies waste water to get into the downstream unit oil trap and be for further processing.Adopt centrifugal separation technique that desalination sewage is carried out oily water separation, not only reduced the oil-contg in the sewage, and isolated sump oil can all get into primary tower and rationally utilize, both realize the sump oil decrement, alleviate storing device pressure again.This technology can replace technology such as gravity settling of the prior art, oil trap.
Solution provided by the invention is specific as follows:
A kind of CDU that contains the Electric Desalting Wastewater oil removal plant; Comprise the electrical desalter that contains a crude oil import, oil export and water port and contain the primary tower that an oil phase enters the mouth; The oil export of this electrical desalter is connected with this primary tower oil phase inlet; This electrical desalter also is connected separating of oil Electric Desalting Wastewater is carried out water through a centrifugal separation unit with said primary tower; This centrifugal separation unit comprises an inlet, oil phase outlet and water outlet, and this centrifugal separation unit inlet is connected with the water port of this electrical desalter, and this centrifugal separation unit oil phase outlet is connected with the oil phase inlet of primary tower.
Further, also comprise a refrigerating unit, the water outlet of said electrical desalter is connected to the inlet of said centrifugal separation unit through refrigerating unit.
Further, said refrigerating unit comprises interchanger, air cooler and the water cooler that connects successively, and said refrigerating unit outlet is the outlet of water cooler.
Further, said centrifugal separation unit inlet also is connected with the outlet of said interchanger.
Further; Said centrifugal separation unit comprises a Centrifugical extraction separating device, water surge tank and oil phase surge tank; This Centrifugical extraction separating device inlet is said centrifugal separation unit inlet, and the outlet of Centrifugical extraction separating device water is connected with water surge tank inlet, and the outlet of Centrifugical extraction separating device oil phase is connected with oil phase surge tank inlet; This water surge tank outlet is said centrifugal separation unit water outlet, and this oil phase surge tank outlet is said centrifugal separation unit oil phase outlet.
Further, said centrifugal separation unit comprises a Centrifugical extraction separating device, and this equipment is that centrifugal extractor or liquid-liquid separation are used whizzer.
Further, comprise that also one contains the oil trap of water inlet, the water inlet of this oil trap is connected with the water outlet of said centrifugal separation unit.
The method of use that a kind of use is installed according to claim 1 may further comprise the steps:
Step 1: crude oil gets into the electrical desalter desalination;
Step 2: it is separating of oil that the sewage entering centrifugal separation unit that electrical desalter is discharged carries out water;
Step 3: the crude oil after the electrical desalter desalination together flows into primary tower oil phase inlet with the isolated sump oil of centrifugal separation unit and further processes.
Further; The temperature that gets into the desalination sewage of centrifugal separation equipment is 55～90 ℃; The sewage with oil concentration that gets into centrifugal separation equipment is at 600～200000mg/L; Method as the said device of claim 8 carries out the Electric Desalting Wastewater oil removing is characterized in that, the rotating cylinder rotating speed of stating centrifugal separation equipment is 500-3000rpm.
Above-mentioned sewage degrease Centrifugical extraction separating machine adopts Centrifugical extraction tripping device structures such as patent 201020620262.5,200910055098.X, but not as limit.201020620262.5 to be example, this Centrifugical extraction separating device comprises the motor that is positioned at the top, connects the transmission mechanism of motor; The rotation axis that connects transmission rig; The head bearing and chock and lower bearing and the chock that connect rotation axis, inner core, urceolus; Be arranged in the light phase weir and the heavy phase weir of inner core; Be positioned at light phase collecting chamber, light phase export, heavy phase collecting chamber, heavy out, light phase import and the heavy phase import of urceolus, bearing, the bottom blade that is positioned at the vibroshock of rest base and is positioned at outer tube bottom.
Further, the Electric Desalting Wastewater temperature of above-mentioned entering Centrifugical extraction separating machine is controlled at 55 ℃ to 90 ℃.
Compared with prior art, the invention has the advantages that:
(1) overcome existing Electric Desalting Wastewater deoiling method and shortcomings such as operation of equipment complicacy, weak effect, good separating effect, velocity of separation is fast, and is easy to operate, is fit to long-term operation.
(2) realized the Electric Desalting Wastewater recycling of oil removing and sump oil on the spot, suitability is strong, strong shock resistance, is adapted at the refining of petroleum industry and promotes the use of.
Description of drawings
Fig. 1 is the Electric Desalting Wastewater treating part process flow sheet of prior art, wherein:
1-primary tower 2-
1,2,3Electrical desalter 3-preheater 4-air cooler 5-water cooler 6-
1,2Interchanger 7-oil trap 8-pump
Fig. 2 is Electric Desalting Wastewater processing technological flow figure of the present invention, wherein:
1-primary tower 2-
1,2,3Electrical desalter 3-preheater 4-air cooler 5-water cooler 6-
1,2Interchanger 7-oil trap 8-pump 9-centrifugal separation unit
Fig. 3 is the structural representation of centrifugal separation unit among Fig. 2, wherein:
9-
1Pump 9-
2Water surge tank 9-
3Centrifugical extraction separating device 9-
4Oil phase surge tank 9-
5Pump
Embodiment
The present invention is applied to centrifugal separation process efficiently to have reclaimed crude oil fast in the oily water separation of Electric Desalting Wastewater, has reduced oil content of wastewater, has solved the problem that prior art exists.
Below in conjunction with specific examples, further illustrate content of the present invention.
As shown in Figure 2, be Electric Desalting Wastewater processing technological flow figure of the present invention, comprise a plurality of electrical desalters: one-level electrical desalter 2-
1, secondary electrical desalter 2-
2With three grades of electrical desalter 2-
3The oil trap 7 that is connected with the electrical desalter water port; The primary tower 1 that is connected with the electrical desalter oil export; Wherein, the electrical desalter oil export is connected with the crude oil after the input desalination with the oil phase inlet of primary tower 1, and electrical desalter then is connected through refrigerating unit with oil trap; This refrigerating unit is interchanger 6, air cooler 4 and water cooler 5 in the present embodiment, and it is separating of oil that the desalination sewage that this refrigerating unit is discharged with also being connected with a centrifugal separation unit 9 between the oil trap 7 so that to electrical desalter carries out water.This separating unit 9 comprises oil phase outlet and water outlet, and this oil phase outlet is connected with downstream unit primary tower 1 oil phase inlet, and this water outlet connects with oil trap 7.As shown in Figure 3, be the structural representation of centrifugal separation unit, this centrifugal separation unit 9 comprises a Centrifugical extraction separating device 9-
3, water surge tank 9-
2With oil phase surge tank 9-
4, Centrifugical extraction separating device 9-
3Comprise that an inlet, oil phase outlet export with a water: this inlet is connected with the outlet of aforementioned refrigerating unit, and this oil phase outlet is with oil phase surge tank 9-
4Be connected this oil phase surge tank 9-
4After further promoting through pump and electric desalting apparatus take off and send into primary tower 1 after back crude oil mixes; This water outlet is with water surge tank 9-
2Be connected this water surge tank 9-
2Further sewage is sent into oil trap 7, to carry out dividing reason after the further sedimentation through pump.Wherein, interchanger 6 also further is connected with the outlet of water cooler 5, and the high temperature sewage of discharging with mixed heat exchanger 6 merges with the low-temperature sewage that water cooler 5 is discharged mutually, to reach the tripping device optimal working temp.
Above-mentioned sewage degrease Centrifugical extraction separating machine 9-
3201020620262.5), " efficient liquid-liquid solvent extraction method and device " (application number: Centrifugical extraction tripping device structure such as 200910055098.X), but can adopt patent " liquid-liquid two mixes-isolating device mutually " (application number: not as limit.201020620262.5 to be example, this Centrifugical extraction separating device comprises the motor that is positioned at the top, connects the transmission mechanism of motor; The rotation axis that connects transmission rig; The head bearing and chock and lower bearing and the chock that connect rotation axis, inner core, urceolus; Be arranged in the light phase weir and the heavy phase weir of inner core; Be positioned at light phase collecting chamber, light phase export, heavy phase collecting chamber, heavy out, light phase import and the heavy phase import of urceolus, bearing, the bottom blade that is positioned at the vibroshock of rest base and is positioned at outer tube bottom.
It is following that this installs concrete processing technological flow: crude oil gets into electrical desalters 2 and (comprises one-level electrical desalter 2-through preheater 3 back of heating up before taking off
1, secondary electrical desalter 2-
2With three grades of electrical desalter 2-
3) carry out electric desalting, form and take off back crude oil and de-salted water; Take off back crude oil by three grades of electrical desalter 2-
3The oil export on top enters primary tower 1, and de-salted water is discharged from the water port of electrical desalter 2 bottoms; After high temperature Electric Desalting Wastewater that interchanger 6 comes out (about 100 ℃) and the low temperature Electric Desalting Wastewater (about 50 ℃) of further coming out through air cooler 4, water cooler 5 are mixed; Get into centrifugal separation unit 9 and carry out oily water separation; Take off the back sump oil and divide the sump oil of managing out together to send into primary tower 1 with electrical desalter, the sewage that centrifugal separation unit was managed out in 9 minutes drains into oil trap 7.
Should be understood that these embodiment only to be used to the present invention is described and be not used in the restriction scope of the present invention.The experimental technique of unreceipted actual conditions in the following example, usually according to normal condition, or the condition of advising according to manufacturer.Only if indicate, otherwise all umbers are volume parts that all per-cent is volume percent.
Carry out the Electric Desalting Wastewater oil removing by aforesaid technical process, wherein
1. material properties
Desalination sewage: flow is 20t/h, and temperature is 75 ℃, water-mass density 1000kg/m
3, oil density 945kg/m
3(20 ℃), oily viscosity are 303mm
2/ s (50 ℃), oil-contg 20000mg/L
2. Centrifugical extraction separator drum diameter is 500mm, and motor speed is 1000rpm.
3. content assaying method
The oil water cut is measured according to GB/T8929-2006 petroleum products aquametry
The water oil concentration is measured according to the mensuration infrared spectrophotometry of GB/T16488-1996 water quality petroleum-type and vegetable and animals oils.
4. effect
Through after the Centrifugical extraction separator for processing, the oleaginousness of purifying waste water is 44mg/L, and oil removal efficiency has reached 99.78%, and light phase export sump oil water cut is less than 1%, and each leading indicator is good, and is similar with oil property, can re-injection to primary tower, reduce the crude oil waste.
Embodiment 2
1. material properties
Desalination sewage: flow is 30t/h, and temperature is 60 ℃, water-mass density 1000kg/m
3, oil density 910kg/m
3(20 ℃), oily viscosity are 290mm
2/ s (50 ℃), oil-contg 1000mg/L
2. Centrifugical extraction separator drum diameter is 600mm, and motor speed is 1000rpm.
3. content assaying method
The oil water cut is measured according to GB/T8929-2006 petroleum products aquametry
The water oil concentration is measured according to the mensuration infrared spectrophotometry of GB/T16488-1996 water quality petroleum-type and vegetable and animals oils.
4. effect
Through after the Centrifugical extraction separator for processing, the oleaginousness of purifying waste water is 210mg/L, and oil removal efficiency has reached 79%, and light phase export sump oil water cut is less than 1%, and each leading indicator is good, and is similar with oil property, can re-injection to primary tower, reduce the crude oil waste.
1. material properties
Desalination sewage: flow is 10t/h, and temperature is 65 ℃, water-mass density 1000kg/m
3, oil density 935kg/m
3(20 ℃), oily viscosity are 300mm
2/ s (50 ℃), oil-contg 30000mg/L
2. Centrifugical extraction separator drum diameter is 450mm, and motor speed is 1000rpm.
3. content assaying method
The oil water cut is measured according to GB/T 8929-2006 petroleum products aquametry
The water oil concentration is measured according to the mensuration infrared spectrophotometry of GB/T16488-1996 water quality petroleum-type and vegetable and animals oils.
4. effect
Through after the Centrifugical extraction separator for processing, the oleaginousness of purifying waste water is 77mg/L, and oil removal efficiency has reached 99.23%, and light phase export sump oil water cut is less than 1%, and each leading indicator is good, and is similar with oil property, can re-injection to primary tower, reduce the crude oil waste.
Being merely the preferred embodiment of invention in sum, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of claim of the present invention change and modification, all should be technological category of the present invention.
Claims (10)
1. CDU that contains the Electric Desalting Wastewater oil removal plant; Comprise the electrical desalter that contains a crude oil import, oil export and water port and contain the primary tower that an oil phase enters the mouth; The oil export of this electrical desalter is connected with this primary tower oil phase inlet; It is characterized in that this electrical desalter also is connected separating of oil Electric Desalting Wastewater is carried out water with said primary tower through a centrifugal separation unit, this centrifugal separation unit comprises an inlet, oil phase outlet and water outlet; This centrifugal separation unit inlet is connected with the water port of this electrical desalter, and this centrifugal separation unit oil phase outlet is connected with the oil phase inlet of primary tower.
2. the CDU that contains the Electric Desalting Wastewater oil removal plant as claimed in claim 1 is characterized in that, also comprises a refrigerating unit, and the water outlet of said electrical desalter is connected to the inlet of said centrifugal separation unit through refrigerating unit.
3. the CDU that contains the Electric Desalting Wastewater oil removal plant as claimed in claim 2 is characterized in that, said refrigerating unit comprises interchanger, air cooler and the water cooler that connects successively, and said refrigerating unit outlet is the outlet of water cooler.
4. the CDU that contains the Electric Desalting Wastewater oil removal plant as claimed in claim 3 is characterized in that, said centrifugal separation unit inlet also is connected with the outlet of said interchanger.
5. the CDU that contains the Electric Desalting Wastewater oil removal plant as claimed in claim 1; It is characterized in that; Said centrifugal separation unit comprises a Centrifugical extraction separating device, water surge tank and oil phase surge tank; This Centrifugical extraction separating device inlet is said centrifugal separation unit inlet, and the outlet of Centrifugical extraction separating device water is connected with water surge tank inlet, and the outlet of Centrifugical extraction separating device oil phase is connected with oil phase surge tank inlet; This water surge tank outlet is said centrifugal separation unit water outlet, and this oil phase surge tank outlet is said centrifugal separation unit oil phase outlet.
6. like claim 1 or the 5 described CDUs that contain the Electric Desalting Wastewater oil removal plant, it is characterized in that said centrifugal separation unit comprises a Centrifugical extraction separating device, this equipment is that centrifugal extractor or liquid-liquid separation are used whizzer.
7. the CDU that contains the Electric Desalting Wastewater oil removal plant as claimed in claim 1 is characterized in that, comprises that also one contains the oil trap of water inlet, and the water inlet of this oil trap is connected with the water outlet of said centrifugal separation unit.
8. the treatment process that use is installed according to claim 1 is characterized in that, may further comprise the steps:
Step 1: crude oil gets into the electrical desalter desalination;
Step 2: it is separating of oil that the sewage entering centrifugal separation unit that electrical desalter is discharged carries out water;
Step 3: the crude oil after the electrical desalter desalination together flows into primary tower oil phase inlet with the isolated sump oil of centrifugal separation unit and further processes.
9. the method for carrying out the Electric Desalting Wastewater oil removing like the said device of claim 8 is characterized in that, the temperature that gets into the desalination sewage of centrifugal separation equipment is 55～90 ℃, and the sewage with oil concentration that gets into centrifugal separation equipment is at 600～200000mg/L.
10. the method for carrying out the Electric Desalting Wastewater oil removing like the said device of claim 8 is characterized in that, the rotating cylinder rotating speed of stating centrifugal separation equipment is 500-3000rpm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102581433A CN102757813A (en) | 2012-07-24 | 2012-07-24 | Crude oil processing unit containing electro-desalted sewage oil remover and method of crude oil processing unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102581433A CN102757813A (en) | 2012-07-24 | 2012-07-24 | Crude oil processing unit containing electro-desalted sewage oil remover and method of crude oil processing unit |
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| CN102757813A true CN102757813A (en) | 2012-10-31 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011325A (en) * | 2012-12-12 | 2013-04-03 | 华东理工大学 | Treating method and device for oil removal of electro-desalting cut water of inferior crude oil and decrement of dirty oil |
| CN104498084A (en) * | 2014-11-15 | 2015-04-08 | 中海石油舟山石化有限公司 | Desalination and deacidification processing method for crude oil |
| CN104673367A (en) * | 2015-02-09 | 2015-06-03 | 华东理工大学 | Step-by-step oil-water mixture separation method coupled with oil gas washing |
| CN105733664A (en) * | 2014-12-10 | 2016-07-06 | 中国石油天然气股份有限公司 | An electrically desalting and decalcifying process for crude oil |
| CN110857583A (en) * | 2018-08-22 | 2020-03-03 | 中国石油化工股份有限公司 | Gathering and transporting method for clean sewage and shunt refined sewage |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424444A (en) * | 2011-10-25 | 2012-04-25 | 华东理工大学 | Method and device for removing oil from desalted water of crude electrostatic desalting apparatus |
-
2012
- 2012-07-24 CN CN2012102581433A patent/CN102757813A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424444A (en) * | 2011-10-25 | 2012-04-25 | 华东理工大学 | Method and device for removing oil from desalted water of crude electrostatic desalting apparatus |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011325A (en) * | 2012-12-12 | 2013-04-03 | 华东理工大学 | Treating method and device for oil removal of electro-desalting cut water of inferior crude oil and decrement of dirty oil |
| CN104498084A (en) * | 2014-11-15 | 2015-04-08 | 中海石油舟山石化有限公司 | Desalination and deacidification processing method for crude oil |
| CN104498084B (en) * | 2014-11-15 | 2017-06-27 | 中海石油舟山石化有限公司 | The processing method of crude oil desalting depickling |
| CN105733664A (en) * | 2014-12-10 | 2016-07-06 | 中国石油天然气股份有限公司 | An electrically desalting and decalcifying process for crude oil |
| CN105733664B (en) * | 2014-12-10 | 2017-09-01 | 中国石油天然气股份有限公司 | A kind of crude oil electric desalting decalcification process |
| CN104673367A (en) * | 2015-02-09 | 2015-06-03 | 华东理工大学 | Step-by-step oil-water mixture separation method coupled with oil gas washing |
| CN104673367B (en) * | 2015-02-09 | 2017-01-18 | 华东理工大学 | Step-by-step oil-water mixture separation method coupled with oil gas washing |
| CN110857583A (en) * | 2018-08-22 | 2020-03-03 | 中国石油化工股份有限公司 | Gathering and transporting method for clean sewage and shunt refined sewage |
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Application publication date: 20121031 |